Solubility: Gypsum Is moderately soluble in h2o, by using a solubility of about 2 grams per liter at 25°C. Interestingly, gypsum displays retrograde solubility, this means its solubility decreases as h2o temperature improves – compared with most salts that develop into extra soluble in incredibly hot h2o. Agriculture: Soil Conditioner: https://www.propanraya.com/id/produk/eco-gypsum-ee-4050